变频技术在锅炉风机中的应用

Application of Frequency-conversion Technology in Fans of Boiler

针对袁店二矿锅炉鼓风机、引风机采用工频运行方式存在电网冲击大、电能浪费严重的问题，提出采用变频技术改造的方法；分析了变频节能原理、变频控制原理及节能效果。在风机设备上使用变频技术调节电动机转速和风量，可精确地调节锅炉送风量及引风量，不仅提高了锅炉热效率及燃烧效率，而且节能降耗效果显著，平均节能在30％～40％左右。

In view of problems of big impact to power grid, serious energy waste caused by operation mode of industrial frequency of blower and fan of boiler of Yuandian No. 2 Coal Mine, the paper proposed an improved method with frequency-conversion technology, analyzed energy saving principle of frequency- conversion, control principle of frequency-conversion and effect of energy saving. By use of frequency- conversion technology for fan device to regulate speed and air volume of motors, output and input of air volume of boiler can be accurately adjusted, so as to improve thermal efficiency and combustion efficiency of boiler and reduce energy consumption remarkably with 30%-40% average value of saving energy.